Social networking is out and straight invitations are in at Google's free e-mail service, but the official line is that the shift does not signal an end to Gmail's beta status.

Google is giving more people the chance to sign up for Gmail, but the search giant insists the move does not signify an impending full-scale launch of the free e-mail service, which has been in beta since it launched on April 1 last year.

To date, Google has been relying on social networking to roll out Gmail, initially inviting some 2,000 people, who were then able to invite a limited number of others themselves. This week though, Google started sending invitations directly to those who have signed up to be kept abreast of updates to the service.

"We're sending invitations to those who supported us during the launch," said a Google representative. But she added, "This does not mean that we're out of beta (or) offering open subscriptions to the world.Source: C|net"